EntityQ1676376· pop 8· linked from 198 articlesJohn Peter LesleySign in to saveUnited States geologist (1819–1903)ConnectionsNational Academy of SciencesEntityUnited StatesCountryCanadaCountryParisEntityironEntityPennsylvaniaEntitygeologyEntityPhiladelphiaEntitycoalEntityoilEntitySheffieldEntityWayback MachineEntitypublic domainEntityprofessorEntityAlbert A. MichelsonEntityRobert A. MillikanEntityUnited States SenateEntityMargaret MeadEntityFrederick DouglassEntityArthur Holly ComptonEntityCategories1819 births1903 deathsAmerican geologistsAmerican science writersMartin Luther University of Halle-Wittenberg alumniMembers of the American Philosophical SocietyMembers of the United States National Academy of SciencesPeople from Milton, MassachusettsPresidents of the American Association for the Advancement of ScienceScientists from PhiladelphiaUniversity of Pennsylvania alumni